Question

resolva as seguintes expressões: a) 14,25 ÷ 2,4 + √1,44 × 2, 1 = b) 3,13 ÷ 1,2 + ∛0,008 × 2³ - 4,5 =

Answer 1

Resposta:

A)

$14.25 \div 2.4 + \sqrt{1.44} \times 2.1 = 5.9375 + \sqrt{ \frac{36}{25} } \times \frac{21}{10} = \frac{95}{16} + \frac{6}{5} \times \frac{21}{10} = \frac{95}{16} + \frac{63}{25} = \frac{3383}{400} = 8.4575$

B)

$3.13 \div 1.2 + \sqrt[3]{0.008} \times 2 {}^{3} - 4.5 = \frac{313}{100} \div \frac{6}{5} + \sqrt[3]{ \frac{1}{125} } \times 8 - \frac{9}{2} = \frac{313}{100} \div \frac{6}{5} + \frac{1}{5} \times 8 - \frac{9}{2} = \frac{313}{20} \div \frac{1}{6} + \frac{8}{5} - \frac{9}{2} = \frac{313}{120} + \frac{8}{5} - \frac{9}{2} = - \frac{7}{24} = - 0.2916$

Espero ter ajudado